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| 型号： | IRPP3637-12A |
| 厂商： | International Rectifier |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | KIT REF DES 12A 1PH SYNC BUCK |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 1 |
| 系列： | POWIR+™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 12A |
| 输入电压： | 10.8 ~ 13.2 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 400kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | IR3637，IRF7823，IRF7832Z |
| 产品目录页面： | 1383 (CN2011-ZH PDF) |
| 相关产品： | IR3637ASTRPBFTR-ND - IC REG CTRLR BUCK PWM VM 8-SOIC IR3637ASPBF-ND - IC REG CTRLR BUCK PWM VM 8-SOIC IR3637STRPBFDKR-ND - IC REG CTRLR BUCK PWM VM 8-SOIC IR3637STRPBFCT-ND - IC REG CTRLR BUCK PWM VM 8-SOIC IRF7832ZTR-ND - MOSFET N-CH 30V 21A 8-SOIC IRF7832Z-ND - MOSFET N-CH 30V 21A 8-SOIC IR3637STRPBFTR-ND - IC REG CTRLR BUCK PWM VM 8-SOIC IR3637SPBF-ND - IC REG CTRLR BUCK PWM VM 8-SOIC |
Data Sheet No. PD94713
IR3637SPBF
1% ACCURATE SYNCHRONOUS PWM CONTROLLER
FEATURES
0.8V Reference Voltage
Operates with a single 5V Supply Voltage
Internal 400kHz Oscillator
Soft-Start Function
Fixed Frequency Voltage Mode
Short Circuit Protection
APPLICATIONS
Computer Peripheral Voltage Regulator
Memory Power supplies
Graphics Card
Low cost on-board DC to DC
TYPICAL APPLICATION
12V
5V
DESCRIPTION
The IR3637 controller IC is designed to provide a simple
synchronous Buck regulator for on-board DC to DC ap-
plications in a small 8-pin SOIC. The output voltage can
be precisely regulated using the internal 0.8V reference
voltage for low voltage applications.
The IR3637 operates at a fixed internal 400kHz switch-
ing frequency to reduce the component size.
The device features under-voltage lockout for both input
supplies, an external programmable soft-start function
as well as output under-voltage detection that latches
off the device when an output short is detected.
C3
Vc
Vcc
HDrv
C2
Q1
C1
SS/SD
D1
L1
Vout
C4
IR3637 LDrv
Q2
C6
C5
R1
Comp
Gnd
Fb
R2
R3
Figure 1 - Typical application of IR3637.
ORDERING INFORMATION
PKG
DESIG
PACKAGE PIN PARTS PARTS T & R
DESCRIPTION COUNT PER TUBE PER REEL Oriantation
Rev. 1.1
06/16/05
S
S
IR3637SPBF 8 95 ------
IR3637STRPBF 8 ------- 2500
www.irf.com
Fig A
1
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